1.

The energy spectrum of a black body exhibits a maximum around a wavelength \[{{\lambda }_{o}}.\] The temperature of the black body is now changed such that the energy is maximum around a wavelength \[\frac{3{{\lambda }_{o}}}{4}\].The power radiated by the black body will now increase by a factor of            [KCET 2002]

A.             256/81                                    
B.             64/27
C.             16/9                                        
D.             4/3 
Answer» B.             64/27


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